EP1205667A2 - Gasreibungspumpe - Google Patents
Gasreibungspumpe Download PDFInfo
- Publication number
- EP1205667A2 EP1205667A2 EP01124630A EP01124630A EP1205667A2 EP 1205667 A2 EP1205667 A2 EP 1205667A2 EP 01124630 A EP01124630 A EP 01124630A EP 01124630 A EP01124630 A EP 01124630A EP 1205667 A2 EP1205667 A2 EP 1205667A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- rotor
- pump
- components
- gas friction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007789 gas Substances 0.000 claims abstract description 34
- 238000005086 pumping Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
- F04D19/046—Combinations of two or more different types of pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/168—Pumps specially adapted to produce a vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
- F04D19/042—Turbomolecular vacuum pumps
Definitions
- the invention relates to a gas friction pump according to the preamble of the first claim.
- Gas friction pumps of various types are known for the conveyance of gases. Their mode of operation is based on the transmission of impulses from moving Walls on the gas particles. In this way a gas flow is made into the desired one Direction generated.
- Gas friction pumps operating in a pressure range work in which the mean free path of the gas molecules is large compared to the geometric dimensions of the pump, i.e. in the molecular flow area, are called molecular pumps.
- the first gas friction pump of this type was presented by Gaede [1], others technical modifications while maintaining the basic principle are constructions by Siegbahn [2], Holweck [3] and Becker [4].
- the latter is a turbomolecular pump known and has become involved in wide areas of technology and science proven great success. It is therefore used to describe the present invention used as an example.
- the pumping speed of a turbomolecular pump is essentially dependent on Inlet cross-section of the intake flange, from the average peripheral speed of the rotor blade ring facing the space to be pumped out and its geometric structure, moreover from the internal structure of the pump, through the gradation of pressure ratio and pumping speed between the one individual stages is determined, and not least by that part of the pump or the pump combination, which emits against atmospheric pressure.
- These conditions can be optimally designed and the speed can be The scope of technical possibilities will be increased so much that the majority of the molecules which are based on the above-mentioned Hit the rotor blade ring and be pumped out can. Not all molecules are recorded that refer to the input cross section of the intake flange.
- Rotor face which has no gas-promoting structure, formed. Even if the rotor blade ring is further enlarged at the expense of the rotor face, remains the pumping speed is limited by the cross-section of the intake flange. It can no more molecules are pumped out than on the gas producing structure of the Meet entrance level. But a large part of these also bounce off the surface and is therefore not covered by the funding mechanism.
- the invention has for its object to present a gas friction pump, which compared to conventional constructions with the same cross-section of the intake flange has a significantly higher pumping speed.
- an additional pump unit is made one or more levels, designed so that most of the Molecules that bounce off the gas-producing structure on another area this structure is reflected and thus subjected to the funding mechanism again is.
- This effect is due to the essentially concave design of the gas-producing Structure causes.
- Such a design allows a radial promotion Direction. This allows reflected molecules to be captured again and further be promoted. This means a significant increase in pumping speed with the same intake cross section.
- the design according to the invention has another great advantage.
- the concave suction space offers space for components that come from the recipient can protrude into it and thus an extremely effective pumping effect are subject.
- FIGS. 1-3 the invention is intended to take a turbomolecular pump as an example are explained in more detail. They each show the arrangement according to the invention in Pot-shaped, conical and dome-shaped shape.
- Fig. 1 shows a gas friction pump with housing 1, which with an intake opening 2 and a gas outlet opening 3 is provided.
- the rotor shaft 4 is in bearings 5 and 6 fixed and is driven by the motor 7.
- On the rotor shaft 4 the rotor disks 12 of a turbomolecular pump are attached. These are with one provided gas-producing structure and effect with the stator disks 14, the are also provided with such a structure, the pump effect.
- the rotor components 21 and the stator components 22 exist each of a cylindrical part 25, 26 and a disc-shaped bottom part 23, 24 and are provided with gas-producing structures.
- FIG. 2 are a conical design of the additional pump unit 30 with rotor part 31 and stator part 32 and in Fig. 3 a dome-shaped design of the additional Pump unit 40 with rotor part 41 and stator part 42 shown.
- Molecules e.g. B. coming from A, are partly from the gas-producing structure of the Rotor components recorded and further promoted and partly reflected at B. A large At C, some of the reflected molecules meet a gas-producing structure and can therefore be pumped on or reflected again. As a result a substantial proportion of the molecules that are reflected by the surface, fed back to the conveyor mechanism.
- suction space 16 created by the concave construction can be used for evacuation and / or degassing components are dipped from the recipient. They are here largely surrounded by pump-active structures and are therefore subject to one extremely effective pumping process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims (5)
- Gasreibungspumpe, bestehend aus einem Gehäuse (1) mit Ansaugöffnung (2) und Gasaustrittsöffnung (3), wobei sich in dem Gehäuse Rotor- (12) und Statorbauteile (14) zur Förderung von Gasen und zur Erzeugung eines Druckverhältnisses befinden, dadurch gekennzeichnet, dass auf der Seite der Ansaugöffnung (2) innerhalb des Gehäuses (1) eine ein- oder mehrstufige, konkav ausgebildete Pumpeinheit (20, 30, 40) angebracht ist, welche eine gasfördernde Struktur aufweist, die derart gestaltet ist, dass eine Gasförderung in radialer Richtung stattfindet und dass die Rotorbauteile (21, 31, 41) dieser Pumpeinheit und die Rotorbauteile (12) der übrigen Gasreibungspumpe sich auf derselben Rotorwelle (4) befinden.
- Gasreibungspumpe nach Anspruch 1, dadurch gekennzeichnet, dass durch die Pumpeinheit (20, 30, 40) eine Gasförderung in axialer und in radialer Richtung stattfindet.
- Gasreibungspumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Rotorbauteile (21) und die Statorbauteile (22) der Pumpeinheit (20) jeweils eine topfförmige Gestalt aufweisen.
- Gasreibungspumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Rotorbauteile (31) und die Statorbauteile (32) der Pumpeinheit (30) jeweils eine kegelförmige Gestalt aufweisen.
- Gasreibungspumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Rotorbauteile (41) und die Statorbauteile (42) der Pumpeinheit (40) eine kalottenförmige Gestalt aufweisen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10056144A DE10056144A1 (de) | 2000-11-13 | 2000-11-13 | Gasreibungspumpe |
DE10056144 | 2000-11-13 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1205667A2 true EP1205667A2 (de) | 2002-05-15 |
EP1205667A3 EP1205667A3 (de) | 2002-11-20 |
EP1205667B1 EP1205667B1 (de) | 2009-01-14 |
Family
ID=7663092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01124630A Expired - Lifetime EP1205667B1 (de) | 2000-11-13 | 2001-10-16 | Gasreibungspumpe |
Country Status (4)
Country | Link |
---|---|
US (1) | US6638010B2 (de) |
EP (1) | EP1205667B1 (de) |
JP (1) | JP4183409B2 (de) |
DE (2) | DE10056144A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1852613A3 (de) * | 2006-05-04 | 2014-04-02 | Pfeiffer Vacuum Gmbh | Vakuumpumpe mit Gehäuse |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10142567A1 (de) * | 2001-08-30 | 2003-03-20 | Pfeiffer Vacuum Gmbh | Turbomolekularpumpe |
GB0229355D0 (en) * | 2002-12-17 | 2003-01-22 | Boc Group Plc | Vacuum pumping arrangement |
GB0322883D0 (en) * | 2003-09-30 | 2003-10-29 | Boc Group Plc | Vacuum pump |
GB0329839D0 (en) * | 2003-12-23 | 2004-01-28 | Boc Group Plc | Vacuum pump |
KR100610012B1 (ko) * | 2004-08-16 | 2006-08-09 | 삼성전자주식회사 | 터보 펌프 |
US7927066B2 (en) * | 2005-03-02 | 2011-04-19 | Tokyo Electron Limited | Reflecting device, communicating pipe, exhausting pump, exhaust system, method for cleaning the system, storage medium storing program for implementing the method, substrate processing apparatus, and particle capturing component |
US20100266426A1 (en) * | 2009-04-16 | 2010-10-21 | Marsbed Hablanian | Increased volumetric capacity of axial flow compressors used in turbomolecular vacuum pumps |
JP7108377B2 (ja) * | 2017-02-08 | 2022-07-28 | エドワーズ株式会社 | 真空ポンプ、真空ポンプに備わる回転部、およびアンバランス修正方法 |
DE102018119747B3 (de) | 2018-08-14 | 2020-02-13 | Bruker Daltonik Gmbh | Turbomolekularpumpe für massenspektrometer |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993023672A1 (de) * | 1992-05-16 | 1993-11-25 | Leybold Aktiengesellschaft | Gasreibungsvakuumpumpe |
JPH0988872A (ja) * | 1995-09-18 | 1997-03-31 | Hitachi Ltd | ターボ真空ポンプ |
JPH0988875A (ja) * | 1995-09-26 | 1997-03-31 | Daikin Ind Ltd | ターボ分子ポンプ |
JPH10246197A (ja) * | 1997-03-05 | 1998-09-14 | Ebara Corp | ターボ分子ポンプ |
JPH10299688A (ja) * | 1997-04-22 | 1998-11-10 | Mitsubishi Heavy Ind Ltd | ターボ分子ポンプ |
EP1041287A2 (de) * | 1999-03-31 | 2000-10-04 | Seiko Seiki Kabushiki Kaisha | Vakuumpumpe |
EP1128069A2 (de) * | 2000-02-24 | 2001-08-29 | Pfeiffer Vacuum GmbH | Gasreibungspumpe |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3969039A (en) * | 1974-08-01 | 1976-07-13 | American Optical Corporation | Vacuum pump |
GB8507010D0 (en) * | 1985-03-19 | 1985-04-24 | Framo Dev Ltd | Compressor unit |
US5020969A (en) * | 1988-09-28 | 1991-06-04 | Hitachi, Ltd. | Turbo vacuum pump |
FR2641582B1 (fr) * | 1989-01-09 | 1991-03-22 | Cit Alcatel | Pompe a vide du type a canal de gaede |
JPH05195957A (ja) * | 1992-01-23 | 1993-08-06 | Matsushita Electric Ind Co Ltd | 真空ポンプ |
GB9318801D0 (en) * | 1993-09-10 | 1993-10-27 | Boc Group Plc | Improved vacuum pumps |
JPH0886298A (ja) * | 1994-09-19 | 1996-04-02 | Hitachi Ltd | ドライターボ真空ポンプ |
JP3486000B2 (ja) * | 1995-03-31 | 2004-01-13 | 日本原子力研究所 | ねじ溝真空ポンプ |
GB9725146D0 (en) * | 1997-11-27 | 1998-01-28 | Boc Group Plc | Improvements in vacuum pumps |
US6193461B1 (en) * | 1999-02-02 | 2001-02-27 | Varian Inc. | Dual inlet vacuum pumps |
-
2000
- 2000-11-13 DE DE10056144A patent/DE10056144A1/de not_active Withdrawn
-
2001
- 2001-10-16 DE DE50114655T patent/DE50114655D1/de not_active Expired - Lifetime
- 2001-10-16 EP EP01124630A patent/EP1205667B1/de not_active Expired - Lifetime
- 2001-10-23 JP JP2001324973A patent/JP4183409B2/ja not_active Expired - Fee Related
- 2001-11-13 US US10/054,154 patent/US6638010B2/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993023672A1 (de) * | 1992-05-16 | 1993-11-25 | Leybold Aktiengesellschaft | Gasreibungsvakuumpumpe |
JPH0988872A (ja) * | 1995-09-18 | 1997-03-31 | Hitachi Ltd | ターボ真空ポンプ |
JPH0988875A (ja) * | 1995-09-26 | 1997-03-31 | Daikin Ind Ltd | ターボ分子ポンプ |
JPH10246197A (ja) * | 1997-03-05 | 1998-09-14 | Ebara Corp | ターボ分子ポンプ |
JPH10299688A (ja) * | 1997-04-22 | 1998-11-10 | Mitsubishi Heavy Ind Ltd | ターボ分子ポンプ |
EP1041287A2 (de) * | 1999-03-31 | 2000-10-04 | Seiko Seiki Kabushiki Kaisha | Vakuumpumpe |
EP1128069A2 (de) * | 2000-02-24 | 2001-08-29 | Pfeiffer Vacuum GmbH | Gasreibungspumpe |
Non-Patent Citations (5)
Title |
---|
DUDEN REDAKTION: "Der Große Duden - Band 1 - 16., erweiterte Auflage" 1967, DUDENVERLAG , MANNHEIM * Seite 395, Spalte 3, Zeilen 12,13 * * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07, 31. Juli 1997 (1997-07-31) & JP 09 088872 A (HITACHI LTD), 31. März 1997 (1997-03-31) * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07, 31. Juli 1997 (1997-07-31) & JP 09 088875 A (DAIKIN IND LTD), 31. März 1997 (1997-03-31) * |
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 14, 31. Dezember 1998 (1998-12-31) & JP 10 246197 A (EBARA CORP), 14. September 1998 (1998-09-14) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 02, 26. Februar 1999 (1999-02-26) & JP 10 299688 A (MITSUBISHI HEAVY IND LTD;TOKYO ELECTRON LTD), 10. November 1998 (1998-11-10) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1852613A3 (de) * | 2006-05-04 | 2014-04-02 | Pfeiffer Vacuum Gmbh | Vakuumpumpe mit Gehäuse |
Also Published As
Publication number | Publication date |
---|---|
EP1205667A3 (de) | 2002-11-20 |
US20020064451A1 (en) | 2002-05-30 |
JP4183409B2 (ja) | 2008-11-19 |
US6638010B2 (en) | 2003-10-28 |
JP2002180989A (ja) | 2002-06-26 |
DE50114655D1 (de) | 2009-03-05 |
EP1205667B1 (de) | 2009-01-14 |
DE10056144A1 (de) | 2002-05-23 |
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